The Aspire Nautilus Mini glassomizer has a revolutionary new design that consists of features based from vape enthusiasts who have provided feedback of what an ideal tank should be. Utilizing this information, the engineers have created a new tank that provides optimal performance and superior vaping functionality. This tank is really a work of art and holds about 2.5ml of eliquid. Updated bottom vertical coil and dont forget the most important part which is the air flow control.